In this clip above, it may appear to be a regular violin that the woman is playing. But as we said in clue number one, sometimes looks can be deceiving. Can you guess how the instrument was made?

We will reveal its origins in this week’s episode of The Revealer, Thursday on Back|Story. Share your guess in the comments section below, and we'll give on-air credit to the first person to guess correctly.

A new type of manufacturing technology can create exact replicas of three dimensional objects. In this image, you can see Nick Glass peering into a machine in Devon, England. Can you guess what kind of machine it is and how it operates? Guess in the comments section below and be sure to catch the full story in the next segment of The Revealer on Back|Story, Thursday.

Here's Nick Glass with a video clue to this Thursday's edition of "The Revealer". Can you figure out what this week's segment will be about? If you've got a clue, place it in the comments section below. Happy Guessing!

Our next episode of The Revealer takes place here. Can you guess where this photo was taken and what our next Revealer episode may be about? Put your answers in the comments section below. The first person with the right guess will be revealed on Thursday.

The Pantheon is one of Rome's most famous structures. It's long been held up as a temple to the gods. But new research suggests there's much more to the building than meets the eye. And as Nick Glass shows us in this week's edition of "the Revealer" - it's all a matter of lighting.

The winner of this week's revealer quiz is "Cyben." Thanks for playing!

Here is clue number three for this week's segment of The Revealer. Take a guess in the comments section below and be sure to tune into Back|Story on Thursday where the name of the winner will be announced.